Like that…
Now, try a damnation map with just the bots and tell me if it is easier. They are great against a chaos spawn, against a DH or even a pest ogryn. They suck against crushers and nurgle beast (they can’t parry).
But worse than everything else, you have to kill 80% (see the scoreboard I posted) of the enemies. But, you can waste ammos like you want…
It is really easy if you pay attention to the event. You just have two things to do, 3 times (or 2, not sure the number of times it repeats, I would say 2). The event is really short.
Sure the uncovered space can disturb several players, but as pointed by several, you have places where you can stay when the energy charges (each energy node is powered and after all are powered you have to manually override the generators).
So yes, this is not an hard event. This is just that usually players are splitting everywhere and don’t pay attention to what is required to complete it.